Abstract
This paper addresses the transmission of medical and context-aware data from mobile patients to healthcare centers over heterogeneous wireless networks. A handheld device, called personal wireless hub (PWH), of each mobile patient first gathers and aggregates the vital sign and context-aware data for various telemedicine applications. PWH transmits the aggregated data to the remote healthcare center over multiple wireless interfaces such as cellular, WLAN, and WiMAX. The aggregated data contain both periodic data and those nonperiodic unpredictable emergency messages that are sporadic and delayintolerant. This paper addresses the problem of providing QoS (e.g., minimum delay, sufficient data rate, acceptable blocking, and/or dropping rate) by designing a packet scheduling and channel/network allocation algorithm over wireless networks. The proposed resource-efficient QoS mechanism is simple and collaborates with an adaptive security algorithm. The QoS and security are achieved mainly with the collaboration of differentiator, delay monitor, data classifier, and scheduler modules within the PWH. This paper also discusses secure data transmission over body sensor networks by introducing key establishment and management algorithms. Simulation results show that the proposed framework achieves low-blocking probability, meets delay requirements, and provides energy-efficient secure communication for the combination of vital signs and context-aware data.
Highlights
Future generation wireless networks are expected to experience huge demands from mobile telemedicine applications
We proposes an energy efficient secure key establishment and authentication (SKEA) protocol to establish a symmetric key between the body sensors and personal wireless hub (PWH) using the biometric signals of patients
This paper has presented channel allocation algorithm and packet scheduling algorithms that collaborate with an adaptive security scheme
Summary
Future generation wireless networks are expected to experience huge demands from mobile telemedicine applications. Typical telemedicine applications include transmission of electro-cardiogram (ECG) signals from a mobile patient to a doctor, voice conversation between the doctor and the personnel in the emergency vehicle, transmission of Xrays, live video, and medical images from the emergency vehicle or the patient to the doctor at the healthcare center. These applications require communication between a mobile patient and a healthcare center. These telemedicine applications have different QoS requirements that are specified in terms of the desired loss rate, delay, and bandwidth. The mobile applications are enabled to take advantage of both the coverage and bandwidth provided by different wireless networks through multiple wireless interfaces in achieving their QoS objectives
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